AU745349B2 - Hydraulic pressure control circuit for a working machine - Google Patents

Hydraulic pressure control circuit for a working machine Download PDF

Info

Publication number
AU745349B2
AU745349B2 AU12599/99A AU1259999A AU745349B2 AU 745349 B2 AU745349 B2 AU 745349B2 AU 12599/99 A AU12599/99 A AU 12599/99A AU 1259999 A AU1259999 A AU 1259999A AU 745349 B2 AU745349 B2 AU 745349B2
Authority
AU
Australia
Prior art keywords
pilot
valve
boom
stick
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
AU12599/99A
Other languages
English (en)
Other versions
AU1259999A (en
Inventor
Hidetake Motomura
Hiroaki Tada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Japan Ltd
Original Assignee
Caterpillar Mitsubishi Ltd
Shin Caterpillar Mitsubishi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP10383198A external-priority patent/JP3531904B2/ja
Priority claimed from JP23720198A external-priority patent/JP2950816B1/ja
Application filed by Caterpillar Mitsubishi Ltd, Shin Caterpillar Mitsubishi Ltd filed Critical Caterpillar Mitsubishi Ltd
Publication of AU1259999A publication Critical patent/AU1259999A/en
Application granted granted Critical
Publication of AU745349B2 publication Critical patent/AU745349B2/en
Assigned to CATERPILLAR JAPAN LTD. reassignment CATERPILLAR JAPAN LTD. Request to Amend Deed and Register Assignors: SHIN CATERPILLAR MITSUBISHI LTD
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B9/00—Servomotors with follow-up action, e.g. obtained by feed-back control, i.e. in which the position of the actuated member conforms with that of the controlling member
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2025—Particular purposes of control systems not otherwise provided for
    • E02F9/2033—Limiting the movement of frames or implements, e.g. to avoid collision between implements and the cabin
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2285—Pilot-operated systems

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)
AU12599/99A 1998-03-31 1998-11-25 Hydraulic pressure control circuit for a working machine Ceased AU745349B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP10383198A JP3531904B2 (ja) 1998-03-31 1998-03-31 作業用機械の油圧制御回路
JP10-103831 1998-03-31
JP10-237201 1998-08-24
JP23720198A JP2950816B1 (ja) 1998-08-24 1998-08-24 作業用機械の油圧制御回路
PCT/JP1998/005300 WO1999050507A1 (fr) 1998-03-31 1998-11-25 Circuit de commande hydraulique d'un engin de travail

Publications (2)

Publication Number Publication Date
AU1259999A AU1259999A (en) 1999-10-18
AU745349B2 true AU745349B2 (en) 2002-03-21

Family

ID=26444420

Family Applications (1)

Application Number Title Priority Date Filing Date
AU12599/99A Ceased AU745349B2 (en) 1998-03-31 1998-11-25 Hydraulic pressure control circuit for a working machine

Country Status (6)

Country Link
US (1) US6269637B1 (fr)
KR (1) KR100533790B1 (fr)
CN (1) CN1142346C (fr)
AU (1) AU745349B2 (fr)
CA (1) CA2276148C (fr)
WO (1) WO1999050507A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3124962B2 (ja) * 1998-12-02 2001-01-15 新キャタピラー三菱株式会社 作業用機械の油圧制御回路
JP4931048B2 (ja) * 2006-07-31 2012-05-16 キャタピラー エス エー アール エル 作業機械の制御装置
US8406945B2 (en) * 2007-10-26 2013-03-26 GM Global Technology Operations LLC Method and apparatus to control logic valves for hydraulic flow control in an electro-mechanical transmission
DE102008018936A1 (de) * 2008-04-15 2009-10-22 Robert Bosch Gmbh Steueranordnung zur Ansteuerung eines Wegeventils
JP2017057607A (ja) * 2015-09-15 2017-03-23 日立建機株式会社 建設機械
JP2018017091A (ja) * 2016-07-29 2018-02-01 コベルコ建機株式会社 建設機械
CN111576533B (zh) * 2020-06-02 2022-04-19 徐州徐工挖掘机械有限公司 挖掘机及其控制方法
CN112211866B (zh) * 2020-09-17 2023-01-06 中冶宝钢技术服务有限公司 大臂控制回路
CN113293813B (zh) * 2021-06-30 2022-12-23 三一重机有限公司 一种挖掘机的控制方法和挖掘机
CN113898024B (zh) * 2021-10-18 2022-11-18 徐州徐工挖掘机械有限公司 一种挖掘机动作的防碰撞控制方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0439879Y2 (fr) 1986-04-07 1992-09-18
JP2520159B2 (ja) 1988-09-22 1996-07-31 株式会社クボタ バックホウのバックホウ装置操作構造
GB2222997B (en) * 1988-09-21 1992-09-30 Kubota Ltd Backhoe implement control system for use in work vehicle
JPH0721655Y2 (ja) 1988-10-25 1995-05-17 北越工業株式会社 油圧ショベルにおける作業体の運転室干渉防止装置
JP3763375B2 (ja) * 1997-08-28 2006-04-05 株式会社小松製作所 建設機械の制御回路

Also Published As

Publication number Publication date
CN1142346C (zh) 2004-03-17
CA2276148A1 (fr) 1999-09-30
CA2276148C (fr) 2004-12-28
WO1999050507A1 (fr) 1999-10-07
AU1259999A (en) 1999-10-18
US6269637B1 (en) 2001-08-07
KR20000069712A (ko) 2000-11-25
CN1251633A (zh) 2000-04-26
KR100533790B1 (ko) 2005-12-06

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Legal Events

Date Code Title Description
FGA Letters patent sealed or granted (standard patent)